Kerr Douglas, Chief Medical Officer at Dyne Therapeutics ($DYN), sold shares on the open market five times over the past year, totaling about $108 thousand. The most recent sale occurred on March 5, 2026. These sales rank 9,450th among nearly 12,000 insiders in our database, where the average is $8.6 million across roughly six transactions per insider. Douglas made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 5, 2026 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 904 | $14.90 | 171,606.0000 | 142,824,687 | 0.52% | 0.00% |
| Feb. 12, 2026 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Stock option (right to buy) | 130000 | $0.00 | 130,000.0000 | 142,824,687 | 9999.99% | 0.09% |
| Feb. 12, 2026 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Common Stock | 85000 | $0.00 | 172,510.0000 | 142,824,687 | 97.13% | 0.06% |
| Dec. 5, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 880 | $20.72 | 87,510.0000 | 142,824,687 | 1.00% | 0.00% |
| Sept. 4, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 3552 | $13.27 | 89,263.0000 | 113,121,357 | 3.83% | 0.00% |
| Sept. 5, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 873 | $13.41 | 88,390.0000 | 113,121,357 | 0.98% | 0.00% |
| July 16, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Stock option (right to buy) | 65110 | $0.00 | 65,110.0000 | 113,121,357 | 9999.99% | 0.06% |
| June 5, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 1342 | $13.35 | 92,815.0000 | 113,121,357 | 1.43% | 0.00% |
| March 5, 2025 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | S | Common Stock | 1343 | $11.83 | 94,157.0000 | 113,121,357 | 1.41% | 0.00% |
| Dec. 4, 2024 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Stock option (right to buy) | 76600 | $0.00 | 76,600.0000 | 0 | 9999.99% | 0.00% |
| Dec. 4, 2024 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Common Stock | 48000 | $0.00 | 95,500.0000 | 0 | 101.05% | 0.00% |
| Sept. 3, 2024 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Common Stock | 47500 | $0.00 | 47,500.0000 | 0 | 9999.99% | 0.00% |
| Sept. 3, 2024 | Dyne Therapeutics, Inc. | $DYN | Kerr Douglas | Chief Medical Officer | A | Stock Option (Right to Buy) | 150300 | $0.00 | 150,300.0000 | 0 | 9999.99% | 0.00% |
| Jan. 29, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | F | Common Stock | 1476 | $1.90 | 385,628.0000 | 64,483,520 | 0.38% | 0.00% |
| Jan. 29, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Common Stock | 5021 | $0.00 | 387,104.0000 | 64,483,520 | 1.31% | 0.01% |
| Jan. 29, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Restricted Stock Units | 5021 | $0.00 | 0.0000 | 64,483,520 | 100.00% | 0.01% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | F | Common Stock | 2320 | $1.91 | 382,083.0000 | 64,483,520 | 0.60% | 0.00% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Common Stock | 6694 | $0.00 | 384,403.0000 | 64,483,520 | 1.77% | 0.01% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | F | Common Stock | 2577 | $1.91 | 377,709.0000 | 64,483,520 | 0.68% | 0.00% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Common Stock | 7437 | $0.00 | 380,286.0000 | 64,483,520 | 1.99% | 0.01% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Restricted Stock Units | 6694 | $0.00 | 20,081.0000 | 64,483,520 | 25.00% | 0.01% |
| Jan. 15, 2024 | Generation Bio Co. | $GBIO | Kerr Douglas | CHIEF MEDICAL OFFICER | M | Restricted Stock Units | 7437 | $0.00 | 7,437.0000 | 64,483,520 | 50.00% | 0.01% |